Known Issues

RAM

Using 2 512 MB DIMMs I got 756 MB of usable RAM (as opposed to 881 with the vendor BIOS).

With only 1 512 MB DIMM the system wouldn't boot.

With my 4 DIMMS from 3 vendors (2x A, 1x B, 1x C) I get the following boot chances. These might be related to another issue and not to the port of this board.

RAM and booting

DIMM configuration

Boots?

A/A

Yes

A

No

A/A/B/C

No

B/C/A/A

Yes

SATA

Sometimes the link seems slow. It doesn't happen every boot. If it happens, SeaBios needs a long time to load grub. Also, the devicenodes in /dev are not in the right order according to the ports on the board. There are also the following messages during boot:

If the above error didn't occur all 5 ports seemed to work flawlessly.

It seems this error only occurs for the first time after a BIOS switch. With the proposed patches (fix and cleanup from 10/08/16) even the vendor bios triggers a kernel panic upon first boot after coreboot was loaded. Something about IRQ issues.

With the newest patch (at least) I get these messages on serial console during boot

drive detection not yet completed, waiting...

0x6=b0, 0x7=80

drive detection selected after 540 ms, retrying 0 ms

Primary Slave device is rstatus = 23

0x6=a0, 0x7=80

drinot yet completed, waiting...

0x6=a0, 0x7=80

drive detection not yet completed, waiting...

0x6=a0, 0x7=80

[snip]

Onboard VGA

In regard to the vendor BIOS the output numbers were switched. DVI-0 (vendor BIOS) was named HDMI-0 using coreboot.

Both VGA and DVI output worked.

PCI-E graphics adapter

Wouldn't work. With both plugged in and CONFIG_CONSOLE_VGA_ONBOARD_AT_FIRST not set there was no video output. I had the vgabios for the onboard adapter still inside the coreboot.rom however.